/* HabitChallenge Home Page Styles */
* {
  font-family: 'Noto Sans KR', sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: #f8fffe;
  line-height: 1.6;
}

/* Hero Section */
.hero-section {
  display: flex;
  align-items: center;
  min-height: calc(100vh - 80px);
  padding: 0 32px;
  background: linear-gradient(135deg, #f0fdfa 0%, #ecfdf5 100%);
  position: relative;
}

.hero-container {
  display: flex;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  gap: 80px;
}

.hero-content {
  flex: 1;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  color: #111827;
  margin-bottom: 24px;
}

.hero-title .highlight {
  color: #10b981;
}

.hero-subtitle {
  font-size: 18px;
  color: #6b7280;
  margin-bottom: 40px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 60px;
}

.btn-primary-large {
  background: #10b981;
  color: white;
  border: none;
  padding: 16px 32px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-primary-large:hover {
  background: #059669;
  color: white;
  transform: translateY(-2px);
}

.btn-secondary-large {
  background: none;
  color: #10b981;
  border: 2px solid #10b981;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-secondary-large:hover {
  background: #10b981;
  color: white;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.stat-item {
  text-align: center;
}

.stat-icon {
  width: 48px;
  height: 48px;
  background: white;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px auto;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.15);
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: #111827;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 14px;
  color: #6b7280;
  font-weight: 500;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-illustration {
  width: 100%;
  max-width: 600px;
  height: 400px;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 600 400"><defs><linearGradient id="bg" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:%2310b981;stop-opacity:0.8"/><stop offset="50%" style="stop-color:%2306d6a0;stop-opacity:0.6"/><stop offset="100%" style="stop-color:%23a7f3d0;stop-opacity:0.4"/></linearGradient><linearGradient id="mountain" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:%2310b981;stop-opacity:0.9"/><stop offset="100%" style="stop-color:%2306d6a0;stop-opacity:0.7"/></linearGradient></defs><rect width="600" height="400" fill="url(%23bg)" rx="20"/><g fill="url(%23mountain)"><path d="M0 400 L100 200 L200 250 L300 150 L400 200 L500 100 L600 150 L600 400 Z" opacity="0.8"/><path d="M0 400 L80 280 L180 320 L280 220 L380 280 L480 180 L580 220 L600 400 Z" opacity="0.6"/></g><g fill="%23ffffff"><circle cx="100" cy="120" r="8" opacity="0.9"/><circle cx="150" cy="90" r="6" opacity="0.7"/><circle cx="200" cy="130" r="10" opacity="0.8"/><circle cx="250" cy="80" r="7" opacity="0.6"/><circle cx="300" cy="140" r="9" opacity="0.9"/><circle cx="350" cy="70" r="5" opacity="0.5"/><circle cx="400" cy="110" r="8" opacity="0.8"/><circle cx="450" cy="160" r="12" opacity="0.9"/><circle cx="500" cy="60" r="6" opacity="0.6"/></g><g fill="%23fef3c7"><ellipse cx="150" cy="320" rx="25" ry="8" opacity="0.6"/><ellipse cx="250" cy="350" rx="30" ry="10" opacity="0.7"/><ellipse cx="350" cy="330" rx="28" ry="9" opacity="0.6"/><ellipse cx="450" cy="360" rx="32" ry="11" opacity="0.8"/></g><g fill="%2310b981"><rect x="120" y="300" width="4" height="20" rx="2"/><rect x="180" y="290" width="4" height="30" rx="2"/><rect x="240" y="310" width="4" height="15" rx="2"/><rect x="300" y="295" width="4" height="25" rx="2"/><rect x="360" y="305" width="4" height="18" rx="2"/><rect x="420" y="285" width="4" height="35" rx="2"/><rect x="480" y="300" width="4" height="20" rx="2"/></g></svg>') center/cover no-repeat;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(16, 185, 129, 0.15);
}

/* Popular Challenges Section */
.popular-challenges {
  padding: 80px 32px;
  background: white;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  color: #111827;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 18px;
  color: #6b7280;
}

.challenges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.challenge-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.challenge-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.12);
}

.challenge-image {
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.challenge-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  color: #374151;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.challenge-difficulty {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: white;
}

.difficulty-초급 { background: #10b981; }
.difficulty-중급 { background: #f59e0b; }
.difficulty-고급 { background: #ef4444; }

.challenge-content {
  padding: 24px;
}

.challenge-title {
  font-size: 20px;
  font-weight: 700;
  color: #111827;
  margin-bottom: 12px;
}

.challenge-description {
  color: #6b7280;
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 20px;
}

.challenge-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  font-size: 14px;
  color: #6b7280;
}

.challenge-progress {
  margin-bottom: 20px;
}

.progress-text {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  margin-bottom: 8px;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: #f3f4f6;
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981, #06d6a0);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.challenge-join-btn {
  width: 100%;
  background: #10b981;
  color: white;
  border: none;
  padding: 12px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
  text-decoration: none;
  display: block;
  text-align: center;
}

.challenge-join-btn:hover {
  background: #059669;
  color: white;
}

/* Statistics Section */
.statistics-section {
  padding: 100px 32px;
  background: linear-gradient(135deg, #e0f2fe 0%, #e1f5fe 100%);
}

.stats-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.stats-header {
  margin-bottom: 60px;
}

.stats-title {
  font-size: 40px;
  font-weight: 800;
  color: #111827;
  margin-bottom: 16px;
}

.stats-subtitle {
  font-size: 18px;
  color: #6b7280;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}

.stats-item {
  background: white;
  padding: 40px 20px;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease;
}

.stats-item:hover {
  transform: translateY(-8px);
}

.stats-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  border-radius: 16px;
}

.stats-icon.users { background: linear-gradient(135deg, #10b981, #06d6a0); color: white; }
.stats-icon.trophy { background: linear-gradient(135deg, #f59e0b, #fbbf24); color: white; }
.stats-icon.chart { background: linear-gradient(135deg, #f59e0b, #fbbf24); color: white; }
.stats-icon.calendar { background: linear-gradient(135deg, #10b981, #06d6a0); color: white; }

.stats-number {
  font-size: 48px;
  font-weight: 800;
  color: #111827;
  margin-bottom: 8px;
}

.stats-label {
  font-size: 18px;
  font-weight: 600;
  color: #111827;
  margin-bottom: 8px;
}

.stats-description {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-container {
    gap: 40px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .challenges-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .hero-section {
    padding: 40px 20px;
  }

  .hero-container {
    flex-direction: column;
    gap: 40px;
    text-align: center;
  }

  .hero-title {
    font-size: 40px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .popular-challenges, .statistics-section {
    padding: 60px 20px;
  }

  .section-title, .stats-title {
    font-size: 32px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .challenges-grid {
    grid-template-columns: 1fr;
  }
}